Transmission trasfirercase rebuilds and up grades.

[HUMMERDAD]

Has anyone had their trasnmission rebuilt and know of any up grade kits that are well any good. I have talked to a few local trans shops and have been told that the 04 H2 has the 480le trans not sure myself witch is used from the chevy S-10 to the Corvette and was told the H2 was already beefed up. Anyone else heard anything else like this , I am looking to her as a expendtionary/ search & rescue platform so I want to town a trailer and not worry about the trans or trasfier case on some back country road camping nor on a search mission.

 

[Mb30sdl]

Ask AAMCO, Anthony probably knows.

 

[LagunaH1]

Through 2007 the H2's had the 4L65e transmission. 2008 and 2009 had the 6 speed 6L80E

Source: http://en.wikipedia.org/wiki/Hummer_H2

 

[MaxPF]

Yup, it has the 4L65E. IMO, the trans is underspecified for the engine and GVW/GCW combination. It is already beefed up vs the 4L60E, with 5 pinion planetaries and other strength/durability improvements, but it is no 4L80E. Hardcore Avalanche guys swap in 4L80E's when their 65E dies. It's a fairly straightforward swap, but certainly not as cheap as rebuilding the 65E. It all depends on how long you plan to keep the vehicle and how strong and durable you want it to be.

 

[HUMMERDAD]

thank you guy's for the info I have also found a guy locally here who is a allison certified repair tec and tells me a new up garde has come available called sonnax sun shell planitary gearing whitch is supposed to fix the power to torque wieght issues with the older units. No its not cheap looking at 3200.00 if nothing else needs to replaced, once he open her up , but this also includes replaceing all the eclectonic on the trans too with new so no problems down the road with that.

 

[[__--MUD--__]]

You could drop a used 4l80 in there for a fraction of that price and it would still be better tranny. Rebuilding these trannies for our rigs is a waste.

http://www.transmissioncenter.net/4l60e.htm All the conversion parts needed are here. Call them if you have questions, they know their ****.

 

[MaxPF]

thank you guy's for the info I have also found a guy locally here who is a allison certified repair tec and tells me a new up garde has come available called sonnax sun shell planitary gearing whitch is supposed to fix the power to torque wieght issues with the older units.

All that does is fix a well known weak spot in the trans. It doesn't address the fact that the transmission simply does not have the clutch surface area nor durability for vehicles as heavy and engines as powerful as the H2/6.0 combo. I have to agree with MUD, swapping a 4L80E with the fixes and updates is a much better use of $3200 than any 4L65E build.

 

[HUMMERDAD]

thanks for the info looking into this